I personally love the scout. If I had the money I always buy scout. For me I've been playing sniper all my life in FPSs and I get headshots like mad. It's the most rewarding feeling to hear someone bitch about getting shot with a scout. I average around 5 kills a round with a scout.
They are a real sniper's choice...not like a awp where a toe shot kills ya. Oh yeah, I like the MP5 and Colt too.